Knox, David M., author
McGraw-Hill, 1990
Buku Teks
Cissell, Robert, author
Houghton Mifflin, 1964
Buku Teks
Cissell, Robert, author
Houghton Mifflin, 1969
Buku Teks
Shao, Stephen P., author
South-Western Publishing, 1990
Buku Teks
Lucking, Richard C., author
John Wiley & Sons, 1980
Buku Teks